CN219054763U

CN219054763U - Sand jar and mold processing thereof

Info

Publication number: CN219054763U
Application number: CN202222643228.5U
Authority: CN
Inventors: 曾祥林
Original assignee: Bestway Inflatables and Material Corp
Current assignee: Bestway Inflatables and Material Corp
Priority date: 2022-10-09
Filing date: 2022-10-09
Publication date: 2023-05-23
Anticipated expiration: 2032-10-09

Abstract

The utility model discloses a processing die, which is used for processing a die blank into a sand cylinder, wherein the sand cylinder sequentially comprises a barrel body and a barrel opening along a first direction, and the processing die comprises: the barrel body forming cavity is used for forming the outer contour of the barrel body, the bottom of the barrel body forming cavity is provided with a forming opening, and the forming opening is used for forming the outer contour of the barrel opening; the blowing needle is arranged below the forming opening, is provided with a blowing hole and can move from a first position to a second position along a second direction; when the blowing needle moves to the second position, the blowing needle is at least partially inserted into the molding opening, so that a barrel opening molding area is formed between the side wall of the blowing needle and the cavity wall of the molding opening, and the barrel opening molding area is used for molding the barrel opening. The utility model can improve the molding effect and the dimensional accuracy of the barrel mouth of the sand cylinder, thereby omitting the secondary processing of the sand cylinder, simplifying the production process and reducing the working intensity and the processing cost of workers. The utility model also discloses a sand cylinder.

Description

Sand jar and mold processing thereof

Technical Field

The utility model relates to the technical field of sand cylinder manufacturing devices, in particular to a sand cylinder and a processing die thereof.

Background

The existing sand cylinder processing die comprises a front die and a rear die, and the concrete manufacturing mode is as follows: the tubular mold blank is first placed between the front mold and the rear mold, and then the front mold and the rear mold are moved in a direction approaching the mold blank until the front mold and the rear mold are closed. After the die is closed, a barrel body forming cavity is formed in the die, the die blank is positioned in the barrel body forming cavity, then blowing air into the inner cavity of the die blank by using an air blowing needle, and the blown air applies pressure to the inner wall of the die blank to deform the die blank until the outer surface of the die blank is attached to the barrel body forming cavity, so that the forming processing of the sand cylinder is realized.

The molding effect and the dimensional accuracy of the barrel opening of the sand cylinder are required to be high in industrial production, and the molding effect of the barrel opening of the sand cylinder processed by blowing into the inner cavity of the die blank is poor, so that the dimensional accuracy is low, and the industrial requirement cannot be met. Therefore, in the existing production mode, secondary processing is often needed to be carried out on the bung hole of the sand cylinder so as to improve the molding effect and the dimensional accuracy of the bung hole. However, the secondary processing increases the production process, increases the working intensity of workers and increases the processing cost.

Disclosure of Invention

The utility model aims to solve the technical problems of complex production procedures, high working intensity of workers and high processing cost of the conventional sand cylinder. The utility model provides a sand cylinder and a processing mould thereof, which can improve the molding effect and the dimensional accuracy of a barrel opening of the sand cylinder, thereby omitting secondary processing of the sand cylinder, simplifying production procedures and reducing the working intensity and the processing cost of workers.

To solve the above technical problem, an embodiment of the present utility model provides a processing mold for processing a mold blank into a sand cylinder, the sand cylinder sequentially including a barrel body and a barrel opening along a first direction, the processing mold comprising:

the barrel body forming cavity is used for forming the outer contour of the barrel body, and a forming opening is formed in the bottom of the barrel body forming cavity along the first direction and is used for forming the outer contour of the barrel opening;

the blowing needle is arranged below the forming opening along the first direction, a blowing hole is formed in the blowing needle, the blowing needle can move from a first position to a second position along the second direction, and the second direction is opposite to the first direction;

when the blowing needle is positioned at the first position, the blowing needle is separated from the blowing hole;

when the blowing needle moves to the second position, the blowing needle is at least partially inserted into the molding opening, so that a barrel opening molding area is formed between the side wall of the blowing needle and the cavity wall of the molding opening, and the barrel opening molding area is used for molding the barrel opening.

Optionally, the bung includes neck and turn-ups that set gradually along first direction, and bung shaping area includes neck shaping area and turn-ups shaping area that set gradually along first direction, and wherein, neck shaping area is used for shaping neck, and turn-ups shaping area is used for shaping turn-ups.

Optionally, an included angle is formed between the neck and the flanging, the forming opening comprises a neck forming cavity and a flanging forming cavity which are sequentially arranged along a first direction, and a neck forming surface and a flanging forming surface which are sequentially arranged along the first direction are arranged on the side wall of the blowing needle;

when the blowing needle moves to the second position, a first gap is formed between the cavity wall of the neck molding cavity and the neck molding surface, the first gap is a neck molding area, the shape of the neck molding area is matched with that of the neck, a second gap is formed between the cavity wall of the flanging molding cavity and the flanging molding surface, the second gap is a flanging molding area, and the shape of the flanging molding area is matched with that of the flanging.

Optionally, the opening edge of the forming opening is provided with a first sealing surface, the blowing needle is provided with a second sealing surface, and when the blowing needle is positioned at the second position, the first sealing surface is attached to the second sealing surface so as to seal the barrel forming cavity and the forming opening.

Optionally, the first sealing surface and the second sealing surface are inclined surfaces, and a distance between the first sealing surface and an axis of the forming port and a distance between the second sealing surface and the axis of the forming port gradually increase along the first direction.

Optionally, one side along the first direction on the blowing needle is further provided with a mounting part, the blowing holes sequentially penetrate through two ends of the blowing needle along the first direction, and when the blowing needle is located at the second position, the air outlet ends of the blowing holes are communicated with the barrel forming cavity, and the air inlet ends of the blowing holes are communicated with the air source.

Optionally, the processing mold further includes:

the side surface of the front die is provided with a first forming groove;

a rear mold, the side surface of which is provided with a second molding groove;

the front die and the rear die can reciprocate along a third direction so as to make the front die and the rear die fit or separate; the third direction is perpendicular to the first direction, and when the front die is attached to the rear die, the first forming groove and the second forming groove are buckled to form a barrel body forming cavity and a forming opening.

Optionally, the processing mold further comprises a die, wherein the die is arranged above the front die and the rear die along the second direction, and the die is used for providing a die blank so as to put the die blank between the front die and the rear die.

Optionally, the processing mold further comprises a top mold, the top mold is arranged at the top of the front mold or the rear mold, when the front mold and the rear mold are assembled, the bottom of the top mold is positioned in the barrel body forming cavity, and the bottom of the top mold is used for forming the outer contour of the bottom of the sand cylinder.

Optionally, the processing mold further includes:

the first driving mechanism is connected with the blowing needle and is used for driving the blowing needle to run along a first direction or a second direction;

the second driving mechanism is connected with the front die and is used for driving the front die to reciprocate along a third direction;

and the third driving mechanism is connected with the rear die and is used for driving the rear die to reciprocate along a third direction.

Optionally, be equipped with the blowdown mouth that exceeds in staving outer wall on the outer wall of staving, be equipped with the through-hole on the blowdown mouth, the through-hole is linked together with the inner chamber of staving, and mold processing still includes fourth actuating mechanism, and fourth actuating mechanism locates on front mould or the back mould, and the drive end of fourth actuating mechanism can pass the inside that the lateral wall of front mould and/or back mould stretched into staving shaping chamber, and the drive end and the blowdown mouth of fourth actuating mechanism can dismantle and be connected.

Optionally, the fourth actuating mechanism locates the border of front mould or rear mould, and when front mould and rear mould compound die, the face that front mould and rear mould are laminated mutually is first laminating face and second laminating face respectively, is equipped with first groove and the second groove of stepping down on first laminating face and the second laminating face respectively, and first groove and the second groove of stepping down can be formed in the passageway of stepping down of staving shaping chamber lateral wall in the front mould and rear mould compound die time phase lock formation, and the drive end of fourth actuating mechanism can pass the passageway of stepping down and stretch into the inside of staving shaping chamber.

Optionally, the first driving mechanism is an electric cylinder, the second driving mechanism and the third driving mechanism are one of the electric cylinder, an air cylinder and an oil cylinder, and the fourth driving mechanism is an air cylinder.

The embodiment of the utility model also provides a sand cylinder which is manufactured by using any one of the processing dies.

Optionally, the sand jar includes staving and bung hole in proper order along first direction, and the bung hole includes neck and the turn-ups that set gradually along first direction, has an contained angle between neck and the turn-ups.

Optionally, a drain outlet is arranged on the side wall of the barrel body, a drain nozzle protruding out of the outer wall of the barrel body is connected to the outside of the drain outlet, a through hole is arranged on the drain nozzle, and the drain outlet is communicated with the through hole.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model limits the shape and the running position of the blowing needle, when the blowing needle runs to the second position, a bung hole forming area with the same shape as the bung hole of the required sand cylinder is formed between the side wall of the blowing needle and the cavity wall of the forming hole, so that the inner wall of the bung hole of the sand cylinder can be extruded by the side wall of the blowing needle while blowing the blowing needle into a mould blank, the bung hole is extruded in the bung hole forming area to be formed, the required shape and size can be achieved at one time, the forming effect and the size precision of the bung hole of the sand cylinder can be enhanced, the secondary processing of the sand cylinder can be avoided, the production procedure can be simplified, the working intensity of workers and the processing cost can be reduced.

Drawings

FIG. 1 shows a schematic view of a sand cylinder provided by an embodiment of the present utility model;

FIG. 2 shows a cross-sectional view of portion A of FIG. 1;

FIG. 3 is a schematic view of a mold processing apparatus according to an embodiment of the present utility model;

FIG. 4 shows an enlarged partial view of portion B of FIG. 3;

FIG. 5 is a schematic view of a front mold and a rear mold after clamping according to an embodiment of the present utility model;

FIG. 6 shows a partial enlarged view of section C of FIG. 5;

FIG. 7 shows a schematic view of a blowing needle provided in an embodiment of the present utility model;

FIG. 8 is a schematic diagram illustrating the operation of a mold processing apparatus according to an embodiment of the present utility model;

fig. 9 shows a second working schematic diagram of the working mold according to the embodiment of the present utility model;

fig. 10 shows a third working schematic diagram of a working mold according to an embodiment of the present utility model;

fig. 11 shows a left side view of fig. 5.

Reference numerals: 1. the mold comprises a mold base, 2, a sand cylinder, 21, a bucket body, 22, a bucket mouth, 221, a neck, 222, a flanging, 3, a front mold, 31, a first molding groove, 4, a rear mold, 41, a second molding groove, 5, a bucket body molding cavity, 6, a molding mouth, 61, a neck molding cavity, 62, a flanging molding cavity, 63, a first sealing surface, 7, a bucket mouth molding area, 71, a neck molding area, 72, a flanging molding area, 8, a blowing needle, 81, a blow hole, 82, a neck molding surface, 83, a flanging molding surface, 84, a second sealing surface, 85, a mounting part, 9, a mouth mold, 10, a top mold, 11, a blow-off nozzle and 12, a fourth driving mechanism. 13. And (5) giving way.

Detailed Description

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present specification, by describing the embodiments of the present utility model with specific examples. While the description of the utility model will be described in connection with the preferred embodiments, it is not intended to limit the inventive features to the implementation. Rather, the purpose of the utility model described in connection with the embodiments is to cover other alternatives or modifications, which may be extended by the claims based on the utility model. The following description contains many specific details for the purpose of providing a thorough understanding of the present utility model. The utility model may be practiced without these specific details. Furthermore, some specific details are omitted from the description in order to avoid obscuring the utility model. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

It should be noted that in this specification, like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

The terms "first," "second," "third," "fourth," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.

In the description of the present embodiment, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present embodiment can be understood in a specific case by those of ordinary skill in the art.

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

Referring to fig. 1, 3, 4, and 8, an embodiment of the present utility model provides a processing mold for processing a mold base 1 into a sand cylinder 2, the sand cylinder 2 sequentially including a tub 21 and a tub mouth 22 in a first direction (X direction as shown in fig. 1). The processing mould comprises a barrel forming cavity 5 and a blowing needle 8. Wherein the barrel forming cavity 5 is used for forming an outer contour, and the outer contour of the barrel 21 can be a cylinder or an ellipsoid by way of example.

Referring to fig. 5, in a first direction (X direction shown in fig. 5), a bottom of the tub forming cavity 5 is provided with a forming opening 6, and the forming opening 6 is used to form an outer contour of the tub opening 22. The blowing needle 8 is arranged below the forming opening 6 in a first direction, and the blowing needle 8 is provided with a blowing hole 81, and the blowing needle 8 can be moved from a first position to a second position in a second direction (Y direction as shown in fig. 3), which is opposite to the first direction. The first position is the position of the blowing needle 8 in fig. 8, and the second position is the position of the blowing needle 8 in fig. 3.

When the blowing needle 8 is in the first position, as shown in fig. 8, the blowing needle is separated from the blowing orifice; when the blowing needle 8 is moved to the second position, as shown in fig. 3 and 4, the blowing needle 8 is at least partially inserted into the forming port 6 such that a bung forming area 7 is formed between the sidewall of the blowing needle 8 and the cavity wall of the forming port 6, the bung forming area 7 being used for forming the bung 22.

The utility model limits the shape and the running position of the blowing needle 8, when the blowing needle 8 runs to the second position, a barrel mouth forming area 7 which is contoured with the shape of the barrel mouth 22 of the required sand cylinder 2 is formed between the side wall of the blowing needle 8 and the cavity wall of the forming opening 6, so that the blowing needle 8 can be used for blowing air into the mould blank 1, the blowing needle 8 is used for extruding the inner wall of the barrel mouth 22 of the sand cylinder 2, the barrel mouth 22 is extruded in the barrel mouth forming area 7 for forming, the barrel mouth 22 is processed into the required shape and size at one time, the forming effect and the dimensional accuracy of the barrel mouth 22 are enhanced, the secondary processing of the sand cylinder 2 is avoided, the production process is simplified, and the working intensity and the processing cost of workers are reduced.

Referring to fig. 1, 2 and 4, the bung 22 includes a neck 221 and a flange 222 disposed sequentially along a first direction, and the neck 221 is illustratively annular along a circumference of the barrel 21, and the flange 222 is disposed along an edge of the neck 221 and flares outwardly in the first direction, with an included angle (as shown by an angle α in fig. 2) between the neck 221 and the flange 222. The bung hole forming area 7 includes a neck forming area 71 and a burring forming area 72 that are sequentially arranged along a first direction, wherein the neck forming area 71 is shaped like the neck 221, the neck forming area 71 is used for forming the neck 221, the burring forming area 72 is shaped like the burring 222, and the burring forming area 72 is used for forming the burring 222.

For example, referring to fig. 5 to 7, the molding port 6 includes a neck molding cavity 61 and a burring molding cavity 62 disposed in this order in the first direction, the neck molding cavity 61 being a cylinder, the burring molding cavity 62 being a truncated cone; the side wall of the blowing needle 8 is provided with a neck molding surface 82 and a flanging molding surface 83 which are sequentially arranged along the first direction, the neck molding surface 82 is a circumferential surface encircling the circumference of the barrel 21, and the flanging molding surface 83 is an annular inclined surface inclining outwards along the first direction.

When the blowing needle 8 is moved to the second position, a first gap is formed between the cavity wall of the neck molding cavity 61 and the neck molding surface 82, the first gap is a neck molding region 71, and the shape of the neck molding region 71 is matched with the shape of the neck 221 so as to mold the neck 221; a second gap is formed between the cavity wall of the turn-up forming cavity 62 and the turn-up forming surface 83, the second gap being the turn-up forming region 72, the shape of the turn-up forming region 72 being matched to the shape of the turn-up 222 for forming the turn-up 222.

Illustratively, referring to fig. 5 to 7, the opening edge of the forming port 6 is provided with a first sealing surface 63, the blowing needle 8 is provided with a second sealing surface 84, and when the blowing needle 8 is located at the second position, the first sealing surface 63 is attached to the second sealing surface 84 to seal the barrel forming cavity 5 and the forming port 6, so that gas leakage in the die blank 1 is prevented, and the subsequent pressure maintaining effect is affected.

Illustratively, the first sealing surface 63 and the second sealing surface 84 are both inclined surfaces, and the distance between the first sealing surface 63 and the axis of the forming port 6, and the distance between the second sealing surface 84 and the axis of the forming port 6, gradually increase in the first direction. The dimension L1 shown in fig. 6 is the maximum distance between the first sealing surface 63 and the axis of the shaping orifice 6, and the dimension L2 shown in fig. 7 is the maximum distance between the second sealing surface 84 and the axis of the shaping orifice 6.

Illustratively, a mounting portion 85 is further provided on one side of the blowing needle 8 in the first direction, and the blowing needle 8 is fixed to a driving end (not shown) of the driving device by the mounting portion 85; the air blowing holes 81 sequentially penetrate through two ends of the air blowing needle 8 along the first direction, and when the air blowing needle 8 is located at the second position, the air outlet ends of the air blowing holes 81 are communicated with the barrel forming cavity 5, and the air inlet ends of the air blowing holes 81 are communicated with an air source.

The specific structure of the working mold is described in detail below with reference to the accompanying drawings.

Illustratively, as shown in fig. 8, the working mold further includes a front mold 3 and a rear mold 4, the front mold 3 and the rear mold 4 being disposed opposite to each other in a third direction (as shown in a Z direction in fig. 8), the third direction being perpendicular to the first direction. Wherein, the side of the front mold 3 facing the rear mold 4 is provided with a first molding groove 31, the side of the rear mold 4 facing the front mold 3 is provided with a second molding groove 41, and the first molding groove 31 and the second molding groove 41 are oppositely arranged. The front mold 3 and the rear mold 4 can each reciprocate in a third direction (as shown in the Z direction in fig. 8) to attach or detach the front mold 3 and the rear mold 4. When the front mold 3 is attached to the rear mold 4 (as shown in fig. 3), the first molding groove 31 and the second molding groove 41 are engaged with each other to form the tub molding cavity 5 and the molding opening 6.

Illustratively, as shown in fig. 8, the working mold further includes a die 9, the die 9 being disposed above the front die 3 and the rear die 4 in the second direction, the die 9 being for providing the die blank 1 to put the die blank 1 between the front die 3 and the rear die 4. Specifically, the die blank 1 can be extruded through the die 9 and run in the first direction between the front die 3 and the rear die 4.

In some possible embodiments, referring to fig. 3 and 8, the processing mold further includes a top mold 10, the top mold 10 is fixedly connected to the top of the front mold 3 or the rear mold 4, when the front mold 3 and the rear mold 4 are closed, the bottom of the top mold 10 is located in the tub forming cavity 5, and the bottom of the top mold 10 is used for forming the bottom outer contour of the sand cylinder 2.

Illustratively, the working mold further includes a first driving mechanism (not shown), a second driving mechanism (not shown), and a third driving mechanism (not shown). Wherein, the first driving mechanism is connected with the mounting part 85 of the blowing needle 8, and the first driving mechanism is used for driving the blowing needle 8 to run along the first direction or the second direction; the second driving mechanism is connected with the front die 3 and is used for driving the front die 3 to reciprocate along a third direction; the third driving mechanism is connected with the rear mould 4 and is used for driving the rear mould 4 to reciprocate along a third direction.

In some possible embodiments, referring to fig. 11, a sewage nozzle 11 protruding from the outer wall of the tub 21 is provided on the outer wall of the tub 21, and a through hole is provided on the sewage nozzle 11, and the through hole is communicated with the inner cavity of the tub 21; the sewage draining nozzle 11 can be provided with a cover body, and when the sand cylinder 2 is cleaned, sewage in the sand cylinder 2 can be drained through the sewage draining nozzle 11. The processing mould further comprises a fourth driving mechanism 12, the fourth driving mechanism 12 is arranged on the front mould 3 or the rear mould 4, the driving end of the fourth driving mechanism 12 can penetrate through the side wall of the front mould 3 and/or the rear mould 4 to extend into the barrel body forming cavity 5, and the driving end of the fourth driving mechanism 12 is detachably connected with the blow-down nozzle 11.

When the sand cylinder 2 with the blow-down nozzle 11 is processed, before processing, the blow-down nozzle 11 can be fixed on the driving end of the fourth driving mechanism 12, the driving end of the fourth driving mechanism 12 is controlled to extend out of the barrel forming cavity 5, the blow-down nozzle 11 is enabled to move to a preset position, then the blowing needle 8 is utilized to blow air into the die blank 1, the die blank 1 is contacted with the blow-down nozzle 11 after being deformed outwards, and the blow-down nozzle 11 is wrapped in the side wall of the die blank, so that the blow-down nozzle 11 is fixed on the side wall of the barrel 21.

Illustratively, the fourth driving mechanism 12 is disposed at the edge of the front mold 3 or the rear mold 4, when the front mold 3 and the rear mold 4 are closed, the surfaces of the front mold 3 and the rear mold 4 are respectively a first bonding surface and a second bonding surface, the first bonding surface and the second bonding surface are respectively provided with a first yielding groove and a second yielding groove, the first yielding groove and the second yielding groove can be buckled to form a yielding channel 13 penetrating through the side wall of the barrel forming cavity 5 when the front mold 3 and the rear mold 4 are closed, and the driving end of the fourth driving mechanism 12 can penetrate through the yielding channel 13 to extend into the barrel forming cavity 5.

In some possible embodiments, the first driving mechanism is an electric cylinder, the second driving mechanism and the third driving mechanism may be one of the electric cylinder, the air cylinder, and the oil cylinder, and the fourth driving mechanism is the air cylinder.

The working process of the processing die provided by the embodiment of the application is as follows:

as shown in fig. 8, before the sand cylinder 2 is processed, the front mold 3 and the rear mold 4 are in an open state, the die 9 is located above the space between the front mold 3 and the rear mold 4, and the blowing needle 8 is located at a first position below the space between the front mold 3 and the rear mold 4 (as in the position of the blowing needle 8 in fig. 8).

When the sand cylinder 2 needs to be processed, the die 9 extrudes the die blank 1 for a certain length, and the die blank 1 is stopped after running to a preset position (such as the position where the die blank 1 is positioned in fig. 9) between the front die 3 and the rear die 4.

Subsequently, the front mold 3 and the rear mold 4 are moved in the third direction (Z direction as shown in fig. 9) to perform mold clamping while the blowing pin 8 is moved in the second direction (Y direction as shown in fig. 9). After the front mold 3 and the rear mold 4 are completely closed, as shown in fig. 3, the preform 1 is pressed into the tub forming cavity 5, and the blowing pin 8 is moved to the second position.

The blowing needle 8 can blow gas into the inner cavity of the die blank 1 through the blowing hole 81, and the gas can squeeze the die blank 1 so as to deform and shape the die blank 1 outwards into a sand cylinder. And when the blowing needle 8 moves to the second position, the blowing needle 8 is at least partially inserted into the forming opening 6, a bung hole forming area 7 is formed between the side wall of the blowing needle 8 and the side wall of the forming opening 6, the blowing needle 8 extrudes the inner wall of the bung hole 22, so that the bung hole 22 is extruded in the bung hole forming area 7 to be formed, the bung hole 22 achieves ideal forming effect and size precision, the subsequent secondary processing of the sand cylinder 2 is avoided, the production procedure is simplified, and the working intensity and the processing cost of workers are reduced.

In addition, referring to fig. 3, when the blowing needle 8 moves to the second position, the first sealing surface 63 is attached to the second sealing surface 84, so that gas is prevented from leaking out of the tub forming cavity 5, so as to maintain the pressure of the inner cavity of the mold blank 1, and thus the outer contour of the mold blank 1 can be tightly attached to the inner wall of the tub forming cavity 5.

Referring to fig. 10, when the molding of the sand cylinder 2 is completed, the blowing pin 8 is operated in the first direction, and then the front mold 3 and the rear mold 4 are opened, and the operator removes the molded sand cylinder 2 from the mold.

Specifically, the sand cylinder 2 is formed in one step, the sand cylinder 2 includes a barrel 21 and a barrel opening 22 sequentially along a first direction, the barrel opening 21 includes a neck 221 and a flange 222 sequentially along the first direction, and an included angle (shown as an angle α in fig. 2) is formed between the neck 221 and the flange 222.

In some possible embodiments, referring to fig. 1, a sewage nozzle 11 protruding from the outer wall of the tub 21 is provided on the outer wall of the tub 21, and a through hole is provided on the sewage nozzle 11, and the through hole is in communication with the inner cavity of the tub 21.

While the utility model has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a further detailed description of the utility model with reference to specific embodiments, and it is not intended to limit the practice of the utility model to those descriptions. Various changes in form and detail may be made therein by those skilled in the art, including a few simple inferences or alternatives, without departing from the spirit and scope of the present utility model.

Claims

1. A mold processing for with mould base processing into sand jar, the sand jar includes staving and bung hole along first direction in proper order, its characterized in that, mold processing includes:

the blowing needle is arranged below the forming opening along the first direction, a blowing hole is formed in the blowing needle, the blowing needle can move from a first position to a second position along a second direction, and the second direction is opposite to the first direction;

when the blowing needle moves to the second position, the blowing needle is at least partially inserted into the forming opening, so that a barrel opening forming area is formed between the side wall of the blowing needle and the cavity wall of the forming opening, and the barrel opening forming area is used for forming the barrel opening.

2. The tooling mold of claim 1, wherein the bung includes a neck and a flange disposed sequentially in the first direction, and the bung forming area includes a neck forming area and a flange forming area disposed sequentially in the first direction, wherein the neck forming area is configured to form the neck and the flange forming area is configured to form the flange.

3. The processing die of claim 2, wherein an included angle is formed between the neck and the flanging, the forming opening comprises a neck forming cavity and a flanging forming cavity which are sequentially arranged along the first direction, and a neck forming surface and a flanging forming surface which are sequentially arranged along the first direction are arranged on the side wall of the blowing needle;

when the blowing needle moves to the second position, a first gap is formed between the cavity wall of the neck molding cavity and the neck molding surface, the first gap is the neck molding area, the shape of the neck molding area is matched with that of the neck, a second gap is formed between the cavity wall of the flanging molding cavity and the flanging molding surface, the second gap is the flanging molding area, and the shape of the flanging molding area is matched with that of the flanging.

4. A tooling die as in claim 3 wherein a first sealing surface is provided at the open edge of said forming port and a second sealing surface is provided on said blowing needle, said first sealing surface being in engagement with said second sealing surface to seal said barrel forming cavity and said forming port when said blowing needle is in said second position.

5. The tooling mold of claim 4 wherein the first sealing surface and the second sealing surface are each beveled and the distance between the first sealing surface and the axis of the forming port and the distance between the second sealing surface and the axis of the forming port increases progressively in the first direction.

6. The processing mold of claim 1, wherein a mounting portion is further provided on one side of the blowing needle along the first direction, the blowing holes sequentially penetrate through two ends of the blowing needle along the first direction, when the blowing needle is located at the second position, an air outlet end of the blowing hole is communicated with the barrel forming cavity, and an air inlet end of the blowing hole is communicated with an air source.

7. The working mold according to any one of claims 1 to 6, characterized in that the working mold further comprises:

the front mold is provided with a first forming groove on the side surface;

the side surface of the rear die is provided with a second forming groove;

the front die and the rear die can reciprocate along a third direction so as to enable the front die and the rear die to be attached or separated; the third direction is perpendicular to the first direction, and when the front die is attached to the rear die, the first forming groove and the second forming groove are buckled to form the barrel forming cavity and the forming opening.

8. The tooling mold of claim 7, further comprising a die disposed above the front and rear dies in the second direction, the die for providing the blank to place the blank between the front and rear dies.

9. The working mold of claim 8, further comprising a top mold provided on top of the front mold or the rear mold, wherein a bottom of the top mold is positioned in the tub molding cavity when the front mold and the rear mold are clamped, and wherein a bottom of the top mold is used for molding a bottom outer contour of the sand cylinder.

10. The working mold according to claim 9, wherein the working mold further comprises:

the first driving mechanism is connected with the blowing needle and is used for driving the blowing needle to run along the first direction or the second direction;

the second driving mechanism is connected with the front die and is used for driving the front die to reciprocate along the third direction;

and the third driving mechanism is connected with the rear mould and is used for driving the rear mould to reciprocate along the third direction.

11. The processing mold of claim 10, wherein a blow-down nozzle protruding out of the outer wall of the barrel body is arranged on the outer wall of the barrel body, a through hole is arranged on the blow-down nozzle, the through hole is communicated with the inner cavity of the barrel body, the processing mold further comprises a fourth driving mechanism, the fourth driving mechanism is arranged on the front mold or the rear mold, the driving end of the fourth driving mechanism can penetrate through the side wall of the front mold and/or the side wall of the rear mold to extend into the inner part of the barrel body forming cavity, and the driving end of the fourth driving mechanism is detachably connected with the blow-down nozzle.

12. The processing mold of claim 11, wherein the fourth driving mechanism is disposed at an edge of the front mold or the rear mold, when the front mold and the rear mold are clamped, a surface of the front mold, which is bonded to the rear mold, is a first bonding surface and a second bonding surface, respectively, a first relief groove and a second relief groove are disposed on the first bonding surface and the second bonding surface, respectively, and the first relief groove and the second relief groove can be buckled to form a relief channel penetrating through a sidewall of the barrel forming cavity when the front mold and the rear mold are clamped, and a driving end of the fourth driving mechanism can penetrate through the relief channel to extend into the barrel forming cavity.

13. The tooling mold of claim 11, wherein the first drive mechanism is an electric cylinder, the second drive mechanism and the third drive mechanism are one of an electric cylinder, an air cylinder, and an oil cylinder, and the fourth drive mechanism is an air cylinder.

14. A sand cylinder manufactured by using the working mold according to any one of claims 1 to 13.

15. The sand cylinder of claim 14 wherein the sand cylinder includes a barrel and a bung in sequence along the first direction, the bung including a neck and a flange in sequence along the first direction, the neck and the flange having an included angle therebetween.

16. The sand cylinder as claimed in claim 15, wherein a blow-down nozzle protruding from the outer wall of the barrel body is provided on the outer wall of the barrel body, and a through hole is provided on the blow-down nozzle, and the through hole is communicated with the inner cavity of the barrel body.